I think certain brands of CD-ROM drives are known for this problem... they can't read PSX CDs properly. It's been talked about before on this thread, do a search on "Acer CD-ROM" or something like that.
AFAIK, either get a firmware update for your CD-ROM drive, or get a new one.
AFAIK, either get a firmware update for your CD-ROM drive, or get a new one.